sipunculoid

from The Collaborative International Dictionary of English v.0.48

Sipunculoid \Si*pun"cu*loid\, a. [NL. Sipunculus, the typical
   genus + -oid.] (Zool.)
   Pertaining to the Sipunculoidea. -- n. One of the
   Sipunculoidea.
   [1913 Webster]